Innospec (IOSP) Short Interest Ratio & Short Volume $87.09 -0.50 (-0.57%) Closing price 09/2/2025 04:00 PM EasternExtended Trading$87.13 +0.04 (+0.05%) As of 09/2/2025 06:21 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Short Interest Stock AnalysisAnalyst ForecastsChartCompetitorsDividendEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Innospec Short Interest DataInnospec (IOSP) has a short interest of 435,400 shares, representing 1.78% of the float (the number of shares available for trading by the public). This marks a 35.30% increase in short interest from the previous month. The short interest ratio (days to cover) is 2.1, indicating that it would take 2.1 days of the average trading volume of 175,223 shares to cover all short positions.Current Short Interest435,400 sharesPrevious Short Interest321,800 sharesChange Vs. Previous Month+35.30%Dollar Volume Sold Short$36.11 millionShort Interest Ratio2.1 Days to CoverLast Record DateAugust 15, 2025Outstanding Shares24,833,000 sharesFloat Size24,480,000 sharesShort Percent of Float1.78%Today's Trading Volume118,104 sharesAverage Trading Volume175,223 sharesToday's Volume Vs. Average67% Short Selling Innospec? Sign up to receive the latest short interest report for Innospec and its competitors with MarketBeat's FREE newsletter. Email Address Get Report View SMS TermsBy entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. 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Skip Charts & View Short Interest HistoryShort Interest ChartDays to Cover ChartShort Percent of Float ChartIOSP Short Interest Over TimeIOSP Days to Cover Over TimeIOSP Percentage of Float Shorted Over Time Innospec Short Interest History Export to ExcelReport DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date 8/15/2025435,400 shares $36.11 million +35.3%1.8%2.1 $82.94 7/31/2025321,800 shares $25.71 million +23.3%1.3%1.5 $79.90 7/15/2025260,900 shares $22.20 million -29.9%1.1%1.3 $85.08 6/30/2025372,300 shares $31.31 million +103.2%1.5%1.8 $84.09 6/15/2025183,200 shares $15.53 million -27.9%0.7%0.9 $84.77 5/31/2025253,900 shares $21.67 million +5.6%1.0%1.1 $85.33 5/15/2025240,500 shares $21.23 million -18.0%1.0%1 $88.27 4/30/2025293,100 shares $26.23 million -11.6%1.2%1.3 $89.48 4/15/2025331,500 shares $28.92 million -13.5%1.3%1.5 $87.23 3/31/2025383,000 shares $36.29 million -16.5%1.6%1.8 $94.75 Get the Latest News and Ratings for IOSP and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Innospec and its competitors with MarketBeat's FREE daily newsletter. 3/15/2025458,800 shares $45.00 million +52.8%1.9%2.2 $98.09 2/28/2025300,200 shares $31.04 million +14.5%1.2%2 $103.41 2/15/2025262,100 shares $28.36 million -9.3%1.1%1.9 $108.19 1/31/2025289,000 shares $32.76 million -10.8%1.2%2.2 $113.35 1/15/2025324,000 shares $36.63 million -15.6%1.3%2.7 $113.06 12/31/2024384,000 shares $42.26 million +28.1%1.6%3.3 $110.06 12/15/2024299,800 shares $34.73 million +7.5%1.2%2.6 $115.86 11/30/2024278,900 shares $33.08 million +28.2%1.1%2.7 $118.61 11/15/2024217,500 shares $25.89 million -3.9%0.9%1.9 $119.03 10/31/2024226,400 shares $24.40 million -12.3%0.9%1.9 $107.78 10/15/2024258,100 shares $29.49 million +3.1%1.1%2.1 $114.27 9/30/2024250,400 shares $28.32 million -14.7%1.0%1.9 $113.09 9/15/2024293,400 shares $31.97 million -20.3%1.2%2.2 $108.96 8/31/2024368,200 shares $42.44 million +43.0%1.5%2.7 $115.26 8/15/2024257,500 shares $28.14 million +16.0%1.1%2 $109.28 7/31/2024221,900 shares $29.10 million +5.9%0.9%1.7 $131.14 7/15/2024209,600 shares $26.31 million +8.2%0.9%1.8 $125.51 6/30/2024193,800 shares $23.95 million +14.5%0.8%1.8 $123.59 6/15/2024169,300 shares $20.81 million -16.2%0.7%1.6 $122.91 5/31/2024202,000 shares $26.42 million +16.8%0.8%2 $130.80 5/15/2024173,000 shares $22.76 million -9.2%0.7%1.9 $131.58 4/30/2024190,500 shares $22.86 million -14.2%0.8%2.2 $120.00 4/15/2024221,900 shares $27.03 million +1.4%0.9%2.6 $121.79 3/31/2024218,800 shares $28.21 million -20.1%0.9%2.4 $128.94 3/15/2024273,800 shares $33.42 million +21.1%1.1%3 $122.07 2/29/2024226,100 shares $28.10 million -2.8%0.9%2.4 $124.27 2/15/2024232,500 shares $29.22 million -1.2%1.0%2.5 $125.66 1/31/2024235,200 shares $27.31 million +34.6%1.0%2.6 $116.11 1/15/2024174,700 shares $20.48 million -17.4%0.7%2 $117.23 12/31/2023211,600 shares $26.08 million -10.3%0.9%2.5 $123.24Man Who Called Nvidia at $1.10 Says Buy This Now... (Ad)In 2004, one man called Nvidia before just about anyone knew it existed. Now, this same guy says a new company could become the next to soar like Nvidia.Watch Alex's "Next Magnificent Seven" presentation now. 12/15/2023236,000 shares $28.29 million +58.1%1.0%3 $119.87 11/30/2023149,300 shares $15.69 million +7.1%0.6%2 $105.07 11/15/2023139,400 shares $15.23 million -7.4%0.6%1.8 $109.26 10/31/2023150,600 shares $14.76 million +20.5%0.6%2 $98.00 10/15/2023125,000 shares $12.34 million -3.0%0.5%1.6 $98.74 9/30/2023128,800 shares $13.16 million -22.1%0.5%1.6 $102.20 9/15/2023165,400 shares $17.67 million +14.1%0.7%2.1 $106.84 8/31/2023145,000 shares $15.58 million +2.2%0.6%1.9 $107.42 8/15/2023141,900 shares $14.90 million -5.3%0.6%1.8 $105.03 7/31/2023149,900 shares $16.06 million -7.1%0.6%2 $107.14 7/15/2023161,300 shares $16.33 million +21.0%0.7%2.1 $101.22 6/30/2023133,300 shares $13.39 million -24.5%0.5%1.7 $100.44 6/15/2023176,500 shares $17.81 million -3.8%0.7%2 $100.89 5/31/2023183,500 shares $16.95 million -8.3%0.8%2 $92.36 5/15/2023200,000 shares $19.49 million No Change0.8%2 $97.45 10/31/2022316,100 shares $31.61 million -20.6%1.3%3.7 $99.99 10/15/2022398,200 shares $35.59 million +10.7%1.6%4.8 $89.37 9/30/2022359,700 shares $30.82 million +6.8%1.5%4.3 $85.67 9/15/2022336,800 shares $29.20 million +1.4%1.4%3.8 $86.70 8/31/2022332,200 shares $31.05 million No Change1.4%3.7 $93.46 8/15/2022332,200 shares $32.98 million -6.5%1.4%3.6 $99.27 7/31/2022355,100 shares $36.22 million +1.2%1.5%3.4 $102.00 7/15/2022350,800 shares $32.70 million +10.1%1.4%3.2 $93.22 6/30/2022318,700 shares $30.53 million -4.7%1.3%3 $95.79 6/15/2022334,300 shares $31.55 million -3.9%1.4%3.1 $94.39 5/31/2022347,800 shares $35.49 million +12.5%1.4%3.7 $102.03 5/15/2022309,300 shares $31.39 million +13.2%1.3%3.2 $101.49 4/30/2022273,300 shares $26.05 million +10.9%1.1%3.2 $95.31 4/15/2022246,400 shares $23.12 million -12.1%1.0%3 $93.83 3/31/2022280,400 shares $25.95 million -16.8%N/A0 $92.55 3/15/2022337,200 shares $30.77 million +7.3%1.4%3.8 $91.24 2/28/2022314,300 shares $30.02 million +8.1%1.3%2.8 $95.50 2/15/2022290,800 shares $27.31 million +25.6%1.2%2.6 $93.93 1/31/2022231,500 shares $21.52 million -0.1%1.0%1.9 $92.96 1/15/2022231,700 shares $22.84 million +8.4%N/A0 $98.56 12/31/2021213,700 shares $19.31 million -27.4%0.9%1.7 $90.34 12/15/2021294,500 shares $26.89 million +28.2%1.2%2.3 $91.30 11/30/2021229,800 shares $18.66 million +25.9%0.9%2.1 $81.20 11/15/2021182,600 shares $16.80 million -52.8%0.8%1.7 $92.02 10/29/2021387,000 shares $35.07 million +5.1%1.6%4 $90.61 10/15/2021368,200 shares $31.55 million +0.8%1.5%3.6 $85.70 9/30/2021365,200 shares $30.76 million +2.1%1.5%3.6 $84.22 9/15/2021357,600 shares $31.04 million -7.6%1.5%3.2 $86.80 8/31/2021387,200 shares $36.24 million +2.4%1.6%3.7 $93.60 8/13/2021378,200 shares $35.58 million +36.1%1.6%3.5 $94.08 7/30/2021277,800 shares $24.57 million -6.5%1.1%2.5 $88.45 7/15/2021297,100 shares $26.82 million +45.4%1.2%2.9 $90.27 6/30/2021204,300 shares $18.51 million -33.2%0.8%1.9 $90.61 6/15/2021305,800 shares $29.67 million -6.1%1.3%3.3 $97.03 5/28/2021325,700 shares $32.93 million +23.1%1.3%3.5 $101.11Man Who Called Nvidia at $1.10 Says Buy This Now... (Ad)In 2004, one man called Nvidia before just about anyone knew it existed. Now, this same guy says a new company could become the next to soar like Nvidia.Watch Alex's "Next Magnificent Seven" presentation now. 5/14/2021264,500 shares $26.87 million +14.1%1.1%2.8 $101.60 4/30/2021231,900 shares $22.98 million -16.3%1.0%2.5 $99.10 4/15/2021277,000 shares $28.76 million -1.5%N/A0 $103.83 3/31/2021281,100 shares $28.79 million +0.9%N/A3 $102.41 3/15/2021278,700 shares $29.38 million -9.8%N/A2.7 $105.42 2/26/2021309,000 shares $31.50 million +3.7%1.3%2.9 $101.95 2/12/2021298,000 shares $29.79 million -7.2%1.2%2.7 $99.95 1/29/2021321,100 shares $29.38 million -11.0%1.3%2.7 $91.49 1/15/2021360,600 shares $36.00 million -20.9%1.5%3 $99.82 12/31/2020455,800 shares $41.15 million +35.6%1.9%3.8 $90.27 12/15/2020336,200 shares $28.62 million -4.8%1.4%2.7 $85.13 11/30/2020353,100 shares $30.17 million +31.2%1.5%2.8 $85.43 11/15/2020269,200 shares $21.48 million -17.8%1.1%2.3 $79.81 10/30/2020327,300 shares $21.36 million 0.0%1.4%2.9 $65.25 10/15/2020327,400 shares $22.16 million +24.9%1.4%3 $67.70 9/30/2020262,100 shares $16.60 million -4.5%1.1%2.5 $63.32 9/15/2020274,300 shares $18.54 million -9.4%1.1%2.6 $67.58 IOSP Short Interest - Frequently Asked Questions What is Innospec's current short interest? Short interest is the volume of Innospec shares that have been sold short but have not yet been closed out or covered. As of August 15th, investors have sold 435,400 shares of IOSP short. 1.78% of Innospec's shares are currently sold short. Learn More on Innospec's current short interest. What is a good short interest ratio for Innospec? The short interest ratio, also known as the "days to cover ratio", is calculated by dividing the number of shares of a stock sold short divided by its average trading volume. A short interest ratio ranging between 1 and 4 generally indicates strong positive sentiment about a stock and a lack of short sellers. A short interest ratio of 10 or greater indicates strong pessimism about a stock. IOSP shares currently have a short interest ratio of 2.0. Learn More on Innospec's short interest ratio. What is a good short interest percentage for Innospec? Companies that have a short interest as a percentage of float below 10% indicates positive investor sentiment and few short sellers. Stocks with a short interest percentage above 10% is considered high, suggesting some investors are pessimistic about the stock. Companies with a short interest percentage of 20% or more indicates widespread negative sentiment. 1.78% of Innospec's floating shares are currently sold short. Is Innospec's short interest increasing or decreasing? Innospec saw a increase in short interest in the month of August. As of August 15th, there was short interest totaling 435,400 shares, an increase of 35.3% from the previous total of 321,800 shares. Changes in short volume can be used to identify positive and negative investor sentiment. Investors that short sell a stock are betting that its price will decline in the future. An increase in short sale volume suggests bearish (negative) sentiment among investors. A decrease on short sale volume suggests bullish (positive) sentiment. What is Innospec's float size? Innospec currently has issued a total of 24,833,000 shares. Some of Innospec's outstanding shares are available for trading, while others are subject to various restrictions. The public float, also referred to as floating shares or "the float", are shares that publicly owned, unrestricted and available to trade on the open market. Innospec currently has a public float of 24,480,000 shares. How does Innospec's short interest compare to its competitors? 1.78% of Innospec's shares are currently sold short. Here is how the short interest of companies compare to Innospec: First Financial Bancorp. (1.74%), Pacific Premier Bancorp Inc (1.70%), United Bankshares, Inc. (2.23%), Avient Corporation (1.49%), Cabot Corporation (4.10%), F.N.B. Corporation (2.25%), H. B. Fuller Company (2.76%), Minerals Technologies Inc. (1.73%), Enpro Inc. (2.28%), Stepan Company (2.03%), Which stocks are the most shorted right now? As of the most recent reporting period, the following stocks had the largest short interest positions: Lucid Group, Inc. ($8.00 billion), Spotify Technology ($5.48 billion), AppLovin Corporation ($5.11 billion), Reddit Inc. ($5.02 billion), Coinbase Global, Inc. ($3.99 billion), Charter Communications, Inc. ($3.89 billion), Live Nation Entertainment, Inc. ($3.18 billion), Seagate Technology Holdings PLC ($2.59 billion), ResMed Inc. ($2.55 billion), and Rocket Lab Corporation ($2.52 billion). View all of the most shorted stocks. What does it mean to sell short Innospec stock? Short selling IOSP is an investing strategy that aims to generate trading profit from Innospec as its price is falling. IOSP shares are trading down $0.50 today. To short a stock, an investor borrows shares, sells them and buys the shares back on the public market later to return it to the lender. Short sellers are betting that a stock will decline in price. If the stock does drop after selling, the short seller buys it back at a lower price and returns it to the lender. The difference between the sell price and the buy price is the trader's profit. How does a short squeeze work against Innospec? A short squeeze for Innospec occurs when it has a large amount of short interest and its stock increases in price. This forces short sellers to cover their short interest positions by buying actual shares of IOSP, which in turn drives the price of the stock up even further. How often is Innospec's short interest reported? Short interest is typically published by a stock exchange once per month. However, NASDAQ publishes a report for U.S. stocks, including IOSP, twice per month. The most recent reporting period available is August, 15 2025. More Short Interest Resources from MarketBeat Related Companies FFBC Short Interest Data PPBI Short Interest Data UBSI Short Interest Data AVNT Short Interest Data CBT Short Interest Data FNB Short Interest Data FUL Short Interest Data MTX Short Interest Data NPO Short Interest Data SCL Short Interest Data Short Interest Tools Stocks to Short Largest Short Interest Positions Short Interest Increases Short Interest Decreases Short Interest Reporting Dates This page (NASDAQ:IOSP) was last updated on 9/3/2025 by MarketBeat.com Staff From Our PartnersHow “Trump’s New Dollar” Could Impact Your WealthPresident Trump just signed a game-changing law… That could soon upgrade the U.S. dollar in your checking a...Brownstone Research | SponsoredForget Tesla — This Tiny AI Stock Is Musk’s Real PlayWhile Wall Street focused on Tesla’s earnings, Elon Musk was quietly building a supercomputer so powerful it c...Behind the Markets | SponsoredBuffett, Gates and Bezos Dumping StocksThe world's wealthiest individuals are making huge moves with their money. 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Here’s why I’m excited.So, unless you’ve been living under a rock, you probably saw the news… Nvidia just signed a $7 BILLION deal...Timothy Sykes | Sponsored Adding Choose a watchlist: Watchlist Adding You have already added ten stocks to your watchlist. Upgrade to MarketBeat All Access to add more stocks to your watchlist. Adding Innospec Inc. Please log in to your account or sign up in order to add this asset to your watchlist. Share Innospec With A Colleague Link copied to clipboard. Get 30 Days of MarketBeat All Access for Free Sign up for MarketBeat All Access to gain access to MarketBeat's full suite of research tools. Start Your 30-Day Trial MarketBeat All Access Features Best-in-Class Portfolio Monitoring Get personalized stock ideas. Compare portfolio to indices. Check stock news, ratings, SEC filings, and more. Stock Ideas and Recommendations See daily stock ideas from top analysts. Receive short-term trading ideas from MarketBeat. Identify trending stocks on social media. 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